Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3001 - Steam locomotives
- 1589 more...
- ItemJMF00-00887.0 - Northern Pacific steam locomotive 1728 at Hoquiam, Washington, in 1950.
- ItemJMF00-00888.0 - Northern Pacific steam locomotive 1728 at Tacoma-15th St. Tower, Washington, in 1952.
- ItemJMF00-00889.0 - Northern Pacific steam locomotive 1728 at Livingston, Montana, in 1954.
- ItemJMF00-00890.0 - Northern Pacific steam locomotive 1728 at Seattle, Washington, in 1936.
- ItemJMF00-00891.0 - Northern Pacific steam locomotive 1728 at Seattle, Washington, in 1934.
- ItemJMF00-00891.1 - Northern Pacific steam locomotive 1728, circa 1956.
- ItemJMF00-00892.0 - Northern Pacific steam locomotive 1729 at Spokane, Washington, in 1952.
- ItemJMF00-00893.0 - Northern Pacific steam locomotive 1729 at Livingston, Montana, in 1954.
- ItemJMF00-00894.0 - Northern Pacific steam locomotive 1730 at Brainerd, Minnesota, in 1950.
- 1047 more...